If you find that your bottle of Olive Oil is cloudy and thick, it will probably be because it is below 7 degrees C (45 degrees F). Don’t worry about this: it is perfectly normal and reversible.
The chilling does not damage the oil in any way. The bottles below clearly show what happens when the temperature falls. It will return to its normal clarity and consistency, with no loss of quality, flavour or shelf life, when it is warmed to room temperature.